2000 Chevy Blazer Will not shift in reverse

2000 CHEVROLET BLAZER
113,000 MILES • 6 CYL • 2WD • AUTOMATIC
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2000 BLAZER S
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I have a 2000 blazer with 113000 miles. the car will not move in reverse it moves in the forward gears But will not shift out of the low gear unless I let off the gas. It was driving ok and had no signs of trouble before this happened
I had the fluid changed and the oil pan lowered and filter replaced. their was no metal or broken parts. The last fluid and filter changed was at 90,000 miles Could it be the control module. the engine is fine and the car starts up in park.
May 19, 2008 at 11:47 AM
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MERLIN2021
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To check if it's electrical, get under there and unplg the connector on the tranny, look for corrosion, or bet or pushed out pins, if thats good, scan it for codes.
May 19, 2008 at 1:38 PM